Illuminating device



UNiTEDJ STATES PATENT oFEicE.

REUBAEVN B. BENJAMIN. OF- CHICAGO, ILLINOIS, ASSIGNOR TO BENJAMIN ELECTRIC MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION F ILLI- NOIS.

ILLUMINATING DEVICE.

Patented Oct. 12, 1920.

Application filed `Tanuary 27, 1916. Serial No. 74,583.

; .vices and more specifically to such devices provided'with a concave reflector, anda 'receptacle for an electric lamp adjustable to bring the lamp in p roper position with respect to the'reiector.

Among the objects of my invention 1s to provide such a device which will be simple in construction and etlicient in use.

In the drawings, in which I haveshown an embodiment of my invention- Figure 1 is a vertlcal axial section ofa lamp embodying my invention. the section' being taken on the line 1 1 of Fig. 2; and

Fig. 2 is a section on the line 2-2 of Fig'. 1.

Referring now to the drawings in detail I have shown my invention in connection with a lamp comprising a, casing 19, a re'- flector 11 within the casing', a receptacle 12 also supported within the casing, a frame 1B pi'voted.witlrrespect to the casing 10, aud a front glass 14 mounted in the frame 13.

The casing' 10 is provided with anopening 15 in the rear of the receptacle' 12 through which the adjusting means for the receptacle extend. The reflector 11 has an opening 16 in its rear portion through` which the receptacle l2 extends and in and is provided with a plurality of smaller openings 1T (three in number as shown) in which the pins, which prevent rotation of the receptacle 12, slide.

The receptacle 12 comprises an insulating support or base 18, a center contact 19 secured to the base by means 'of au eyelet 207 and a shell or socket 21 of conducting material slidable and tiltable in the opening 1G.

The means for tiltably and slidably adjusting' the receptacle 12 comprise a` screw 23 rigidly secured to the plate`24 which -iu turn is rigidly secured to the base 18, a` nut 25 having' a flange portion 25a engaging the -in the openings 1T in the reflector 11. A

lamp 30 is detachably secured in the socket 21 in any suitable manner, the center contact 31 of the lamp engaging the center contact 19 and the shell contact 32 of the lamp engaging shell or socket 21. A flange or sleeve 33 may be formed about the opening 1G to afford a bearing for thev socket 21, and flanges or sleeves 34 may beformed around the opening 1T to afford bearings for the pins 29.

In the form I have' illustrated one of the terminals is grounded, the circuit be'ng from the center cont-act 19,\ through he \lamp circuit to the shell contact 32, to the grounded shell or socket 21.

In case it is desired to adjust the lamp 30 with respect to the reflector 11 vthe lock nut 27 is loosenedafter which the socket can be tilted in any direction about the flange as a support, the opening 15 in the casing 10 being large enough to permit movement of the nut 25 in any direction. If it is desired to adjust the lamp 30 axially, the nut is turned in one direction or the other forcing' the lamp 30 in or out as desired. After the desired adjustment of the lamp is secured the lock nut 2T is again tightened up.

The split pins 29 will prevent rotation of the receptacle 12 when'the lamp is being inserted'in the socket 21 and ywhen the nut 25 is being turned. .i

Ilaving' thus described my invention what I claim as new and desire to secure by Letters Patent is;- i

l. In a deviceof the class described, a concave reflector, a housing therefor'haying an opening' therein, an electric lamp receptacle, means for supporting said receptacle to tilt in any direction and to move axially with respect to said reflector.,means for gaging said housing adjacent the edgel of said opening, one of said clamping members 2. In a device of the class described,v al

concave reflector, a housing therefor having an opening therein, an electric lamp receptacle, means for supporting said receptacle to tilt in any direction" and to move axially with respect to said reflector, means for manually tilting said receptacle in any direction comprising a member secured to said receptacle and'extending. through and movable in said opening, and means for securing said member in any adjusted position comprising' two clamping members having inteiengaging screw threads for engaging said housing adjacent the edge of said opening, one of said clamping' members 'concave reflector having a circular openingv therein, and an electric lamp receptacle eX- tending through said opening mounted to tilt in any direction about the edge of said,

opening as a ulcrum.

4. In a device of the class described, ay concave reflector having a circular opening therein, and an electric lamp receptacle extending throughsaid opening mounted to tilt inany direction about the edge of said openingas a fulcrum and to slide on said' edge as a support. y

In` Witness whereof, I have hereunto subscribed my name.

REUBEN B. BENJAMIN. 

